/**
 * @author Mxb
 * @version 1.0
 * @date 2020/2/26 19:48
 */
public class Main {
    public static void main(String[] args) {
        Stack stack = new Stack();

        stack.push(1);
        stack.push(2);
        stack.push(3);
        stack.push(4);


    }
}
